Federal police agencies are responsible for the enforcement of
federal laws in countries with a
federal constitution. Their exact role varies from country to country, but their work typically includes areas such as immigration control, investigating counterfeiting, policing of airports, and the protection of the
head of state and of other members of federal institutions. They may also be responsible for the investigation and prevention of crimes which are not local to just one
state or province; for example, kidnapping, narcotics trafficking, and fraud. The provision of law enforcement on land and in buildings owned or controlled by the federal government will also usually be the responsibility of a federal police agency.
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